Steam-cooker



I (No Model.) 2,Sheets*-Sheet 1.

T. J; WHITNEY.

Steam Cooker.

' Na. 238,264. Patented March 1,1881.

FIG-2| d uenhr MFHHS. PNOTO-UTHOGRAFHER. WASHINGTON. D C.

(NpModeL) 2 Sheets-Sheet 2.

T; J. WHITNEY.

Steam Cooker. No. 238,264. Patented March 1,1881.

0- T" a: A

".FQ'ERS, PHOTO-LITHOGRAF'HER. WASHINGTON, D. c.

UNITED STATES PATENT OFFICE.

THOMAS J. WHITNEY, OF PHILADELPHIA, PENNSYLVANIA.

STEAM-COOKER.

SPECIFICATION forming part of Letters Patent No. 238,264, dated March 1,1881.

Application filed December 24, 1880. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS J. WHITNEY, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented a new and useful Improvement inSteam-Cookers, of which the following is a specification.

My invention consists, in the first place, in the combination of thepans with the wall of the cooker by means of projections on the sides ofthe pans and internal annular flanges of the wall upon which the saidprojections rest; and,in the second place, the combination of the saidrings with each other and with the boiler, by means of the said annularflanges which support the lower edges of the rings, respecively, and thelower edge of the rim of the cover, the upper side of the flanges havingan annular depression to form a water-seal, as hereinafter described.

In the accompanying drawings, which make a part of this specification,Figure 1 represents a plan or top view of my improved steamcooker, withthe cover and pans removed. Fig. 2 is a vertical section on the line 00w of Fig. 1, with the pans and cover in position. Fig. 3 is a verticalsection of the boiler A and cover 0, showing their connection when therings B and pans D are omitted, for the purpose of using the vessel onlyfor boiling.

Like letters of reference in all the figures indicate the same parts.

A represents the boiler of my improved cooker, and B is a ringinterposed between the boiler and the cover 0, to form an extension ofthe walls of the cooker. Any desirable number of such rings may bearranged in succession to make the wall of the cooker of sufficientheight to contain the requisite number of pans D. Two of the pans onlyare shown in the drawings, yet it will readily appear that any desirablenumber may be used. The inner surfaces of the boiler A and ring B areeach provided with a flange, a, formed by bending each sheet of metal byany suitable mechanism. They have an annular depression on their upperside to form supports and water-seals b for the lower edge of the ringsB, as seen in Fig. 2, the upper one serving for the connection of thelower edge of the rim 0 of the cover 0. The flanges, as shown in thedrawings, are arranged a short distance below the upper edges of therings and the edge of the boiler, so that the inner surfaces thereof mayhold the rings and the cover 5 5 in succession laterally in position.These flanges also serve for supports for the pans, which are providedwith a suitable number of vertical strips, E, permanently connected withthe outer surface of their sides, the shoulders 01 of the strips restingupon said flanges, as represented. If desired, any other suitableprojections of the pans may be used instead of said strips. The flangesor also serve to stiffen the sides of the boiler and rings and preservetheir contour.

As the supports for the pans are of annular shape they are readilyplaced in position, it being impossible for them to drop through theopenings bounded by the inneredge of the flanges.

The outer surface of the rings B and the rim 0 of the cover 0, as seenin the drawings, have similar flanges a, for the purpose of stiffenin gthe rings and cover, and for preserving their shape; but the form oftheir cross-section is not material. They may also be used in connectionwith the inner flanges for support-s for the rings B and cover by havingthem the proper height to rest upon the upper edges of the wall of theboiler and rings.

It will readily appear that as steam or vapor collects on the surface ofthe cover 0 and rings B and condenses, it will rundown and collect inthe depressions b of the flanges a, and form Water-seals, and thusprevent the escape of steam, and that these seals will act assafetyescapes for the steam when its pressure he comes too great.

When the pans and rings are omitted the vessel becomes an ordinarycooking-utensil having a water-seal, as seen in Fig. 3.

I claim as my invention 1. The annular flanges a on the inner surface ofthe wall of the cooker, with shoulders 61 of the strips E, or othersuitable projections of the pans D, for holding the latter in theirelevated positions,substantially as described.

2. The annular flanges at, having their upper sides of depressed or cupform for forming water-seals, in combination with the lower edges of therings B and cover 0, substantially as described.

THOS. J. WHITNEY.

Witnesses THOMAS J. BE LEY, STEPHEN UsrIoK.

